Experts are still in the early stages of understanding the reasons behind the rise. The authors of the study, published in the Lancet Oncology, said consumption of junk food, high levels of physical inactivity and the obesity epidemic were likely to be among the factors.
https://www.thelancet.com/journals/lanonc/article/PIIS1470-2045%2824%2900600-4/fulltext
“Ongoing efforts are essential to identify the additional factors behind these trends and to develop effective prevention strategies tailored to younger generations and local resources worldwide.”
The overall number of cases in young adults was still low, with only about one in 20 bowel cancers in the UK diagnosed in people aged under 50.
Sung said it was critical that more people know the symptoms. “Raising awareness of the trend and the distinct symptoms of early-onset colorectal cancer (eg rectal bleeding, abdominal pain, altered bowel habits, and unexplained weight loss) among young people and primary care providers can help reduce delays in diagnosis and decrease mortality,”
